Mercurial > octave
annotate liboctave/array/Sparse.h @ 21574:ae4d7dfea337
maint: merge stable to default.
author | John W. Eaton <jwe@octave.org> |
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date | Fri, 01 Apr 2016 12:57:49 -0400 |
parents | 1473547f50f5 f3f8e1d3e399 |
children | 53728df3e4c9 |
rev | line source |
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5164 | 1 // Template sparse classes |
2 /* | |
3 | |
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4 Copyright (C) 2004-2015 David Bateman |
11523 | 5 Copyright (C) 1998-2004 Andy Adler |
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6 Copyright (C) 2010 VZLU Prague |
7016 | 7 |
8 This file is part of Octave. | |
5164 | 9 |
10 Octave is free software; you can redistribute it and/or modify it | |
11 under the terms of the GNU General Public License as published by the | |
7016 | 12 Free Software Foundation; either version 3 of the License, or (at your |
13 option) any later version. | |
5164 | 14 |
15 Octave is distributed in the hope that it will be useful, but WITHOUT | |
16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
18 for more details. | |
19 | |
20 You should have received a copy of the GNU General Public License | |
7016 | 21 along with Octave; see the file COPYING. If not, see |
22 <http://www.gnu.org/licenses/>. | |
5164 | 23 |
24 */ | |
25 | |
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26 #if ! defined (octave_Sparse_h) |
5164 | 27 #define octave_Sparse_h 1 |
28 | |
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29 #include "octave-config.h" |
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30 |
5164 | 31 #include <cassert> |
32 #include <cstddef> | |
33 | |
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34 #include <iosfwd> |
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35 #include <algorithm> |
5164 | 36 |
37 #include "Array.h" | |
38 #include "dim-vector.h" | |
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39 #include "lo-error.h" |
5164 | 40 #include "lo-utils.h" |
41 | |
7433 | 42 #include "oct-sort.h" |
43 | |
5164 | 44 class idx_vector; |
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45 class PermMatrix; |
5164 | 46 |
47 // Two dimensional sparse class. Handles the reference counting for | |
48 // all the derived classes. | |
49 | |
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50 template <typename T> |
5164 | 51 class |
52 Sparse | |
53 { | |
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54 public: |
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55 |
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56 typedef T element_type; |
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57 |
5164 | 58 protected: |
59 //-------------------------------------------------------------------- | |
60 // The real representation of all Sparse arrays. | |
61 //-------------------------------------------------------------------- | |
62 | |
6108 | 63 class OCTAVE_API SparseRep |
5164 | 64 { |
65 public: | |
66 | |
67 T *d; | |
5275 | 68 octave_idx_type *r; |
69 octave_idx_type *c; | |
5604 | 70 octave_idx_type nzmx; |
5275 | 71 octave_idx_type nrows; |
72 octave_idx_type ncols; | |
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73 octave_refcount<int> count; |
5164 | 74 |
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75 SparseRep (void) |
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76 : d (0), r (0), c (new octave_idx_type [1]), nzmx (0), nrows (0), |
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77 ncols (0), count (1) |
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78 { |
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79 c[0] = 0; |
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80 } |
5164 | 81 |
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82 SparseRep (octave_idx_type n) |
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83 : d (0), r (0), c (new octave_idx_type [n+1]), nzmx (0), nrows (n), |
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84 ncols (n), count (1) |
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85 { |
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86 for (octave_idx_type i = 0; i < n + 1; i++) |
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87 c[i] = 0; |
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88 } |
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90 SparseRep (octave_idx_type nr, octave_idx_type nc, octave_idx_type nz = 0) |
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91 : d (nz > 0 ? new T [nz] : 0), |
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92 r (nz > 0 ? new octave_idx_type [nz] : 0), |
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93 c (new octave_idx_type [nc+1]), nzmx (nz), nrows (nr), |
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94 ncols (nc), count (1) |
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95 { |
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96 for (octave_idx_type i = 0; i < nc + 1; i++) |
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97 c[i] = 0; |
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98 } |
5164 | 99 |
100 SparseRep (const SparseRep& a) | |
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101 : d (new T [a.nzmx]), r (new octave_idx_type [a.nzmx]), |
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102 c (new octave_idx_type [a.ncols + 1]), |
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103 nzmx (a.nzmx), nrows (a.nrows), ncols (a.ncols), count (1) |
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104 { |
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105 octave_idx_type nz = a.nnz (); |
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106 std::copy (a.d, a.d + nz, d); |
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107 std::copy (a.r, a.r + nz, r); |
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108 std::copy (a.c, a.c + ncols + 1, c); |
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109 } |
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110 |
5164 | 111 ~SparseRep (void) { delete [] d; delete [] r; delete [] c; } |
112 | |
5604 | 113 octave_idx_type length (void) const { return nzmx; } |
5164 | 114 |
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115 octave_idx_type nnz (void) const { return c[ncols]; } |
5164 | 116 |
5275 | 117 T& elem (octave_idx_type _r, octave_idx_type _c); |
5164 | 118 |
5275 | 119 T celem (octave_idx_type _r, octave_idx_type _c) const; |
5164 | 120 |
5275 | 121 T& data (octave_idx_type i) { return d[i]; } |
5164 | 122 |
5275 | 123 T cdata (octave_idx_type i) const { return d[i]; } |
5164 | 124 |
5275 | 125 octave_idx_type& ridx (octave_idx_type i) { return r[i]; } |
5164 | 126 |
5275 | 127 octave_idx_type cridx (octave_idx_type i) const { return r[i]; } |
5164 | 128 |
5275 | 129 octave_idx_type& cidx (octave_idx_type i) { return c[i]; } |
5164 | 130 |
5275 | 131 octave_idx_type ccidx (octave_idx_type i) const { return c[i]; } |
5164 | 132 |
133 void maybe_compress (bool remove_zeros); | |
134 | |
5275 | 135 void change_length (octave_idx_type nz); |
5164 | 136 |
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137 bool indices_ok (void) const; |
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138 |
5164 | 139 private: |
140 | |
141 // No assignment! | |
142 | |
143 SparseRep& operator = (const SparseRep& a); | |
144 }; | |
145 | |
146 //-------------------------------------------------------------------- | |
147 | |
148 void make_unique (void) | |
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149 { |
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150 if (rep->count > 1) |
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151 { |
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152 SparseRep *r = new SparseRep (*rep); |
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153 |
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154 if (--rep->count == 0) |
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155 delete rep; |
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156 |
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157 rep = r; |
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158 } |
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159 } |
5164 | 160 |
161 public: | |
162 | |
163 // !!! WARNING !!! -- these should be protected, not public. You | |
164 // should not access these data members directly! | |
165 | |
166 typename Sparse<T>::SparseRep *rep; | |
167 | |
168 dim_vector dimensions; | |
169 | |
170 private: | |
171 | |
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172 static typename Sparse<T>::SparseRep *nil_rep (void); |
5164 | 173 |
174 public: | |
175 | |
176 Sparse (void) | |
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177 : rep (nil_rep ()), dimensions (dim_vector(0,0)) |
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178 { |
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179 rep->count++; |
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180 } |
5164 | 181 |
5275 | 182 explicit Sparse (octave_idx_type n) |
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183 : rep (new typename Sparse<T>::SparseRep (n)), |
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184 dimensions (dim_vector (n, n)) { } |
5164 | 185 |
5275 | 186 explicit Sparse (octave_idx_type nr, octave_idx_type nc) |
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187 : rep (new typename Sparse<T>::SparseRep (nr, nc)), |
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188 dimensions (dim_vector (nr, nc)) { } |
5164 | 189 |
5275 | 190 explicit Sparse (octave_idx_type nr, octave_idx_type nc, T val); |
5164 | 191 |
5275 | 192 Sparse (const dim_vector& dv, octave_idx_type nz) |
5164 | 193 : rep (new typename Sparse<T>::SparseRep (dv(0), dv(1), nz)), |
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194 dimensions (dv) { } |
5164 | 195 |
5275 | 196 Sparse (octave_idx_type nr, octave_idx_type nc, octave_idx_type nz) |
5164 | 197 : rep (new typename Sparse<T>::SparseRep (nr, nc, nz)), |
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198 dimensions (dim_vector (nr, nc)) { } |
5164 | 199 |
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200 // Both SparseMatrix and SparseBoolMatrix need this ctor, and this |
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201 // is their only common ancestor. |
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202 explicit Sparse (const PermMatrix& a); |
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203 |
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204 // Type conversion case. Preserves capacity (). |
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205 template <typename U> |
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206 Sparse (const Sparse<U>& a) |
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207 : rep (new typename Sparse<T>::SparseRep (a.rep->nrows, a.rep->ncols, |
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208 a.rep->nzmx)), |
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209 dimensions (a.dimensions) |
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210 { |
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211 octave_idx_type nz = a.nnz (); |
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212 std::copy (a.rep->d, a.rep->d + nz, rep->d); |
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213 std::copy (a.rep->r, a.rep->r + nz, rep->r); |
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214 std::copy (a.rep->c, a.rep->c + rep->ncols + 1, rep->c); |
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215 } |
5164 | 216 |
217 // No type conversion case. | |
218 Sparse (const Sparse<T>& a) | |
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219 : rep (a.rep), dimensions (a.dimensions) |
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220 { |
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221 rep->count++; |
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222 } |
5164 | 223 |
224 public: | |
225 | |
226 Sparse (const dim_vector& dv); | |
227 | |
228 Sparse (const Sparse<T>& a, const dim_vector& dv); | |
229 | |
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230 Sparse (const Array<T>& a, const idx_vector& r, const idx_vector& c, |
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231 octave_idx_type nr = -1, octave_idx_type nc = -1, |
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232 bool sum_terms = true, octave_idx_type nzm = -1); |
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233 |
5164 | 234 // Sparsify a normal matrix |
235 Sparse (const Array<T>& a); | |
236 | |
237 virtual ~Sparse (void); | |
238 | |
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239 Sparse<T>& operator = (const Sparse<T>& a); |
5164 | 240 |
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241 //! Amount of storage for nonzero elements. |
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242 //! This may differ from the actual number of elements, see nnz(). |
5604 | 243 octave_idx_type nzmax (void) const { return rep->length (); } |
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244 |
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245 //! Amount of storage for nonzero elements. |
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246 //! Synonymous with nzmax(). |
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247 OCTAVE_DEPRECATED ("use 'nzmax' instead") |
5604 | 248 octave_idx_type capacity (void) const { return nzmax (); } |
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249 |
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250 //! Actual number of nonzero terms. |
5604 | 251 octave_idx_type nnz (void) const { return rep->nnz (); } |
5164 | 252 |
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253 // Querying the number of elements (incl. zeros) may overflow the index type, |
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254 // so don't do it unless you really need it. |
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255 octave_idx_type numel (void) const |
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256 { |
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257 return dimensions.safe_numel (); |
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258 } |
5164 | 259 |
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260 OCTAVE_DEPRECATED ("use 'nzmax' instead") |
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261 octave_idx_type nelem (void) const { return nzmax (); } |
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262 |
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263 OCTAVE_DEPRECATED ("use 'numel' instead") |
5275 | 264 octave_idx_type length (void) const { return numel (); } |
5164 | 265 |
5275 | 266 octave_idx_type dim1 (void) const { return dimensions(0); } |
267 octave_idx_type dim2 (void) const { return dimensions(1); } | |
5164 | 268 |
5275 | 269 octave_idx_type rows (void) const { return dim1 (); } |
270 octave_idx_type cols (void) const { return dim2 (); } | |
271 octave_idx_type columns (void) const { return dim2 (); } | |
5164 | 272 |
5275 | 273 octave_idx_type get_row_index (octave_idx_type k) { return ridx (k); } |
274 octave_idx_type get_col_index (octave_idx_type k) | |
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275 { |
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276 octave_idx_type ret = 0; |
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277 while (cidx (ret+1) < k) |
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278 ret++; |
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279 return ret; |
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280 } |
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281 |
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282 size_t byte_size (void) const |
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283 { |
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284 return (static_cast<size_t>(cols () + 1) * sizeof (octave_idx_type) |
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285 + static_cast<size_t> (nzmax ()) |
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286 * (sizeof (T) + sizeof (octave_idx_type))); |
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287 } |
5164 | 288 |
289 dim_vector dims (void) const { return dimensions; } | |
290 | |
291 Sparse<T> squeeze (void) const { return *this; } | |
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292 |
5275 | 293 octave_idx_type compute_index (const Array<octave_idx_type>& ra_idx) const; |
5164 | 294 |
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295 OCTAVE_NORETURN T range_error (const char *fcn, octave_idx_type n) const; |
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296 OCTAVE_NORETURN T& range_error (const char *fcn, octave_idx_type n); |
5164 | 297 |
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298 OCTAVE_NORETURN T range_error (const char *fcn, |
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299 octave_idx_type i, octave_idx_type j) const; |
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300 OCTAVE_NORETURN T& range_error (const char *fcn, |
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301 octave_idx_type i, octave_idx_type j); |
5164 | 302 |
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303 OCTAVE_NORETURN T range_error (const char *fcn, |
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304 const Array<octave_idx_type>& ra_idx) const; |
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305 OCTAVE_NORETURN T& range_error (const char *fcn, |
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306 const Array<octave_idx_type>& ra_idx); |
5164 | 307 |
308 // No checking, even for multiple references, ever. | |
309 | |
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310 T& xelem (octave_idx_type n) |
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311 { |
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312 octave_idx_type i = n % rows (); |
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313 octave_idx_type j = n / rows (); |
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314 return xelem (i, j); |
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315 } |
5164 | 316 |
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317 T xelem (octave_idx_type n) const |
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318 { |
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319 octave_idx_type i = n % rows (); |
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320 octave_idx_type j = n / rows (); |
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321 return xelem (i, j); |
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322 } |
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323 |
5275 | 324 T& xelem (octave_idx_type i, octave_idx_type j) { return rep->elem (i, j); } |
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325 T xelem (octave_idx_type i, octave_idx_type j) const |
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326 { |
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327 return rep->celem (i, j); |
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328 } |
5164 | 329 |
5275 | 330 T& xelem (const Array<octave_idx_type>& ra_idx) |
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331 { return xelem (compute_index (ra_idx)); } |
5164 | 332 |
5275 | 333 T xelem (const Array<octave_idx_type>& ra_idx) const |
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334 { return xelem (compute_index (ra_idx)); } |
5164 | 335 |
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336 // FIXME: would be nice to fix this so that we don't |
5164 | 337 // unnecessarily force a copy, but that is not so easy, and I see no |
338 // clean way to do it. | |
339 | |
5275 | 340 T& checkelem (octave_idx_type n) |
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341 { |
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342 if (n < 0 || n >= numel ()) |
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343 return range_error ("T& Sparse<T>::checkelem", n); |
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344 else |
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345 { |
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346 make_unique (); |
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347 return xelem (n); |
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348 } |
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349 } |
5164 | 350 |
5275 | 351 T& checkelem (octave_idx_type i, octave_idx_type j) |
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352 { |
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353 if (i < 0 || j < 0 || i >= dim1 () || j >= dim2 ()) |
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354 return range_error ("T& Sparse<T>::checkelem", i, j); |
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355 else |
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356 { |
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357 make_unique (); |
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358 return xelem (i, j); |
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359 } |
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360 } |
5164 | 361 |
5275 | 362 T& checkelem (const Array<octave_idx_type>& ra_idx) |
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363 { |
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364 octave_idx_type i = compute_index (ra_idx); |
5164 | 365 |
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366 if (i < 0) |
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367 return range_error ("T& Sparse<T>::checkelem", ra_idx); |
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368 else |
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369 return elem (i); |
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370 } |
5164 | 371 |
5275 | 372 T& elem (octave_idx_type n) |
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373 { |
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374 make_unique (); |
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375 return xelem (n); |
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376 } |
5164 | 377 |
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378 T& elem (octave_idx_type i, octave_idx_type j) |
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379 { |
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380 make_unique (); |
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381 return xelem (i, j); |
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382 } |
5164 | 383 |
5275 | 384 T& elem (const Array<octave_idx_type>& ra_idx) |
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385 { return Sparse<T>::elem (compute_index (ra_idx)); } |
5164 | 386 |
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387 #if defined (OCTAVE_ENABLE_BOUNDS_CHECK) |
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388 T& operator () (octave_idx_type n) |
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389 { |
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390 return checkelem (n); |
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391 } |
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392 |
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393 T& operator () (octave_idx_type i, octave_idx_type j) |
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394 { |
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395 return checkelem (i, j); |
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396 } |
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397 |
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398 T& operator () (const Array<octave_idx_type>& ra_idx) |
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399 { |
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400 return checkelem (ra_idx); |
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401 } |
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402 |
5164 | 403 #else |
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404 T& operator () (octave_idx_type n) |
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405 { |
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406 return elem (n); |
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407 } |
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408 |
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409 T& operator () (octave_idx_type i, octave_idx_type j) |
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410 { |
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411 return elem (i, j); |
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412 } |
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413 |
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414 T& operator () (const Array<octave_idx_type>& ra_idx) |
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415 { |
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416 return elem (ra_idx); |
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417 } |
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418 |
5164 | 419 #endif |
420 | |
5275 | 421 T checkelem (octave_idx_type n) const |
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422 { |
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423 if (n < 0 || n >= numel ()) |
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424 return range_error ("T Sparse<T>::checkelem", n); |
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425 else |
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426 return xelem (n); |
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427 } |
5164 | 428 |
5275 | 429 T checkelem (octave_idx_type i, octave_idx_type j) const |
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430 { |
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431 if (i < 0 || j < 0 || i >= dim1 () || j >= dim2 ()) |
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432 return range_error ("T Sparse<T>::checkelem", i, j); |
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433 else |
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434 return xelem (i, j); |
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435 } |
5164 | 436 |
5275 | 437 T checkelem (const Array<octave_idx_type>& ra_idx) const |
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438 { |
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439 octave_idx_type i = compute_index (ra_idx); |
5164 | 440 |
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441 if (i < 0) |
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442 return range_error ("T Sparse<T>::checkelem", ra_idx); |
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443 else |
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444 return Sparse<T>::elem (i); |
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445 } |
5164 | 446 |
5275 | 447 T elem (octave_idx_type n) const { return xelem (n); } |
5164 | 448 |
5275 | 449 T elem (octave_idx_type i, octave_idx_type j) const { return xelem (i, j); } |
5164 | 450 |
5275 | 451 T elem (const Array<octave_idx_type>& ra_idx) const |
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452 { return Sparse<T>::elem (compute_index (ra_idx)); } |
5164 | 453 |
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454 #if defined (OCTAVE_ENABLE_BOUNDS_CHECK) |
5275 | 455 T operator () (octave_idx_type n) const { return checkelem (n); } |
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456 T operator () (octave_idx_type i, octave_idx_type j) const |
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457 { |
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458 return checkelem (i, j); |
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459 } |
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460 |
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461 T operator () (const Array<octave_idx_type>& ra_idx) const |
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462 { |
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463 return checkelem (ra_idx); |
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464 } |
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465 |
5164 | 466 #else |
5275 | 467 T operator () (octave_idx_type n) const { return elem (n); } |
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468 T operator () (octave_idx_type i, octave_idx_type j) const |
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469 { |
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470 return elem (i, j); |
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471 } |
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472 |
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473 T operator () (const Array<octave_idx_type>& ra_idx) const |
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474 { |
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475 return elem (ra_idx); |
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476 } |
5164 | 477 #endif |
478 | |
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479 Sparse<T> maybe_compress (bool remove_zeros = false) |
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480 { |
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481 if (remove_zeros) |
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482 make_unique (); // Needs to unshare because elements are removed. |
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483 |
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484 rep->maybe_compress (remove_zeros); |
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485 return (*this); |
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486 } |
5164 | 487 |
488 Sparse<T> reshape (const dim_vector& new_dims) const; | |
489 | |
5275 | 490 Sparse<T> permute (const Array<octave_idx_type>& vec, bool inv = false) const; |
5164 | 491 |
5275 | 492 Sparse<T> ipermute (const Array<octave_idx_type>& vec) const |
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493 { |
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494 return permute (vec, true); |
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495 } |
5164 | 496 |
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497 void resize1 (octave_idx_type n); |
5164 | 498 |
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499 void resize (octave_idx_type r, octave_idx_type c); |
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500 |
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501 void resize (const dim_vector& dv); |
5164 | 502 |
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503 void change_capacity (octave_idx_type nz) |
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504 { |
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505 if (nz < nnz ()) |
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506 make_unique (); // Unshare now because elements will be truncated. |
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507 rep->change_length (nz); |
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508 } |
5164 | 509 |
5275 | 510 Sparse<T>& insert (const Sparse<T>& a, octave_idx_type r, octave_idx_type c); |
511 Sparse<T>& insert (const Sparse<T>& a, const Array<octave_idx_type>& idx); | |
5164 | 512 |
513 bool is_square (void) const { return (dim1 () == dim2 ()); } | |
514 | |
515 bool is_empty (void) const { return (rows () < 1 && cols () < 1); } | |
516 | |
517 Sparse<T> transpose (void) const; | |
518 | |
519 T* data (void) { make_unique (); return rep->d; } | |
5275 | 520 T& data (octave_idx_type i) { make_unique (); return rep->data (i); } |
5164 | 521 T* xdata (void) { return rep->d; } |
5275 | 522 T& xdata (octave_idx_type i) { return rep->data (i); } |
5164 | 523 |
5275 | 524 T data (octave_idx_type i) const { return rep->data (i); } |
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525 // FIXME: shouldn't this be returning const T*? |
5164 | 526 T* data (void) const { return rep->d; } |
527 | |
5275 | 528 octave_idx_type* ridx (void) { make_unique (); return rep->r; } |
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529 octave_idx_type& ridx (octave_idx_type i) |
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530 { |
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531 make_unique (); return rep->ridx (i); |
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532 } |
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533 |
5275 | 534 octave_idx_type* xridx (void) { return rep->r; } |
535 octave_idx_type& xridx (octave_idx_type i) { return rep->ridx (i); } | |
5164 | 536 |
5275 | 537 octave_idx_type ridx (octave_idx_type i) const { return rep->cridx (i); } |
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538 // FIXME: shouldn't this be returning const octave_idx_type*? |
5275 | 539 octave_idx_type* ridx (void) const { return rep->r; } |
5164 | 540 |
5275 | 541 octave_idx_type* cidx (void) { make_unique (); return rep->c; } |
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542 octave_idx_type& cidx (octave_idx_type i) |
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543 { |
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544 make_unique (); return rep->cidx (i); |
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545 } |
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546 |
5275 | 547 octave_idx_type* xcidx (void) { return rep->c; } |
548 octave_idx_type& xcidx (octave_idx_type i) { return rep->cidx (i); } | |
5164 | 549 |
5275 | 550 octave_idx_type cidx (octave_idx_type i) const { return rep->ccidx (i); } |
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551 // FIXME: shouldn't this be returning const octave_idx_type*? |
5275 | 552 octave_idx_type* cidx (void) const { return rep->c; } |
5164 | 553 |
5275 | 554 octave_idx_type ndims (void) const { return dimensions.length (); } |
5164 | 555 |
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556 void delete_elements (const idx_vector& i); |
5164 | 557 |
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558 void delete_elements (int dim, const idx_vector& i); |
5164 | 559 |
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560 void delete_elements (const idx_vector& i, const idx_vector& j); |
5164 | 561 |
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562 Sparse<T> index (const idx_vector& i, bool resize_ok = false) const; |
5164 | 563 |
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564 Sparse<T> index (const idx_vector& i, const idx_vector& j, |
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565 bool resize_ok = false) const; |
5164 | 566 |
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567 void assign (const idx_vector& i, const Sparse<T>& rhs); |
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568 |
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569 void assign (const idx_vector& i, const idx_vector& j, const Sparse<T>& rhs); |
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570 |
5164 | 571 void print_info (std::ostream& os, const std::string& prefix) const; |
572 | |
5900 | 573 // Unsafe. These functions exist to support the MEX interface. |
574 // You should not use them anywhere else. | |
575 void *mex_get_data (void) const { return const_cast<T *> (data ()); } | |
576 | |
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577 octave_idx_type *mex_get_ir (void) const |
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578 { |
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579 return const_cast<octave_idx_type *> (ridx ()); |
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580 } |
5900 | 581 |
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582 octave_idx_type *mex_get_jc (void) const |
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583 { |
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584 return const_cast<octave_idx_type *> (cidx ()); |
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585 } |
7433 | 586 |
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587 Sparse<T> sort (octave_idx_type dim = 0, sortmode mode = ASCENDING) const; |
7433 | 588 Sparse<T> sort (Array<octave_idx_type> &sidx, octave_idx_type dim = 0, |
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589 sortmode mode = ASCENDING) const; |
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590 |
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591 Sparse<T> diag (octave_idx_type k = 0) const; |
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592 |
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593 // dim = -1 and dim = -2 are special; see Array<T>::cat description. |
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594 static Sparse<T> |
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595 cat (int dim, octave_idx_type n, const Sparse<T> *sparse_list); |
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596 |
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597 Array<T> array_value (void) const; |
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598 |
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599 // Generic any/all test functionality with arbitrary predicate. |
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600 template <typename F, bool zero> |
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601 bool test (F fcn) const |
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602 { |
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603 return any_all_test<F, T, zero> (fcn, data (), nnz ()); |
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604 } |
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605 |
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606 // Simpler calls. |
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607 template <typename F> |
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608 bool test_any (F fcn) const |
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609 { return test<F, false> (fcn); } |
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610 |
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611 template <typename F> |
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612 bool test_all (F fcn) const |
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613 { return test<F, true> (fcn); } |
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614 |
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615 // Overloads for function references. |
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616 bool test_any (bool (&fcn) (T)) const |
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617 { return test<bool (&) (T), false> (fcn); } |
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618 |
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619 bool test_any (bool (&fcn) (const T&)) const |
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620 { return test<bool (&) (const T&), false> (fcn); } |
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621 |
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622 bool test_all (bool (&fcn) (T)) const |
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623 { return test<bool (&) (T), true> (fcn); } |
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624 |
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625 bool test_all (bool (&fcn) (const T&)) const |
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626 { return test<bool (&) (const T&), true> (fcn); } |
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627 |
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628 template <typename U, typename F> |
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629 Sparse<U> |
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630 map (F fcn) const |
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631 { |
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632 Sparse<U> result; |
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633 U f_zero = fcn (0.); |
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634 |
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635 if (f_zero != 0.) |
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636 { |
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637 octave_idx_type nr = rows (); |
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638 octave_idx_type nc = cols (); |
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639 |
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640 result = Sparse<U> (nr, nc, f_zero); |
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641 |
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642 for (octave_idx_type j = 0; j < nc; j++) |
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643 for (octave_idx_type i = cidx (j); i < cidx (j+1); i++) |
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644 { |
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645 octave_quit (); |
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646 /* Use data instead of elem for better performance. */ |
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647 result.data (ridx (i) + j * nr) = fcn (data (i)); |
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648 } |
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649 |
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650 result.maybe_compress (true); |
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651 } |
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652 else |
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653 { |
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654 octave_idx_type nz = nnz (); |
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655 octave_idx_type nr = rows (); |
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656 octave_idx_type nc = cols (); |
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657 |
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658 result = Sparse<U> (nr, nc, nz); |
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659 octave_idx_type ii = 0; |
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660 result.cidx (ii) = 0; |
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661 |
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662 for (octave_idx_type j = 0; j < nc; j++) |
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663 { |
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664 for (octave_idx_type i = cidx (j); i < cidx (j+1); i++) |
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665 { |
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666 U val = fcn (data (i)); |
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667 if (val != 0.0) |
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668 { |
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669 result.data (ii) = val; |
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670 result.ridx (ii++) = ridx (i); |
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671 } |
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672 octave_quit (); |
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673 } |
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674 result.cidx (j+1) = ii; |
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675 } |
7602
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676 |
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677 result.maybe_compress (false); |
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678 } |
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679 |
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680 return result; |
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681 } |
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682 |
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683 // Overloads for function references. |
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684 template <typename U> |
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685 Sparse<U> |
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686 map (U (&fcn) (T)) const |
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687 { return map<U, U (&) (T)> (fcn); } |
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688 |
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689 template <typename U> |
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690 Sparse<U> |
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691 map (U (&fcn) (const T&)) const |
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692 { return map<U, U (&) (const T&)> (fcn); } |
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693 |
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694 bool indices_ok (void) const { return rep->indices_ok (); } |
5164 | 695 }; |
696 | |
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697 template <typename T> |
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698 std::istream& |
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699 read_sparse_matrix (std::istream& is, Sparse<T>& a, |
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700 T (*read_fcn) (std::istream&)) |
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701 { |
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702 octave_idx_type nr = a.rows (); |
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703 octave_idx_type nc = a.cols (); |
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704 octave_idx_type nz = a.nzmax (); |
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705 |
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706 if (nr > 0 && nc > 0) |
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707 { |
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708 octave_idx_type itmp; |
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709 octave_idx_type jtmp; |
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710 octave_idx_type iold = 0; |
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711 octave_idx_type jold = 0; |
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712 octave_idx_type ii = 0; |
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713 T tmp; |
11586
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|
714 |
9469
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|
715 a.cidx (0) = 0; |
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716 for (octave_idx_type i = 0; i < nz; i++) |
10312
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717 { |
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718 itmp = 0; jtmp = 0; |
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|
719 is >> itmp; |
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|
720 itmp--; |
9469
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|
721 |
10312
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|
722 is >> jtmp; |
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diff
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|
723 jtmp--; |
9469
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|
724 |
10312
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diff
changeset
|
725 if (itmp < 0 || itmp >= nr) |
cbc402e64d83
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diff
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|
726 { |
21136
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Rik <rik@octave.org>
parents:
21134
diff
changeset
|
727 is.setstate (std::ios::failbit); |
7cac4e7458f2
maint: clean up code around calls to current_liboctave_error_handler.
Rik <rik@octave.org>
parents:
21134
diff
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|
728 |
10312
cbc402e64d83
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diff
changeset
|
729 (*current_liboctave_error_handler) |
cbc402e64d83
untabify liboctave header files
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diff
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|
730 ("invalid sparse matrix: row index = %d out of range", |
cbc402e64d83
untabify liboctave header files
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diff
changeset
|
731 itmp + 1); |
cbc402e64d83
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10158
diff
changeset
|
732 } |
9469
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diff
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|
733 |
10312
cbc402e64d83
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|
734 if (jtmp < 0 || jtmp >= nc) |
cbc402e64d83
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10158
diff
changeset
|
735 { |
21136
7cac4e7458f2
maint: clean up code around calls to current_liboctave_error_handler.
Rik <rik@octave.org>
parents:
21134
diff
changeset
|
736 is.setstate (std::ios::failbit); |
7cac4e7458f2
maint: clean up code around calls to current_liboctave_error_handler.
Rik <rik@octave.org>
parents:
21134
diff
changeset
|
737 |
10312
cbc402e64d83
untabify liboctave header files
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diff
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|
738 (*current_liboctave_error_handler) |
cbc402e64d83
untabify liboctave header files
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|
739 ("invalid sparse matrix: column index = %d out of range", |
cbc402e64d83
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10158
diff
changeset
|
740 jtmp + 1); |
cbc402e64d83
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10158
diff
changeset
|
741 } |
9469
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diff
changeset
|
742 |
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changeset
|
743 if (jtmp < jold) |
cbc402e64d83
untabify liboctave header files
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parents:
10158
diff
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|
744 { |
21136
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Rik <rik@octave.org>
parents:
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diff
changeset
|
745 is.setstate (std::ios::failbit); |
7cac4e7458f2
maint: clean up code around calls to current_liboctave_error_handler.
Rik <rik@octave.org>
parents:
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diff
changeset
|
746 |
10312
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changeset
|
747 (*current_liboctave_error_handler) |
21136
7cac4e7458f2
maint: clean up code around calls to current_liboctave_error_handler.
Rik <rik@octave.org>
parents:
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diff
changeset
|
748 ("invalid sparse matrix: " |
7cac4e7458f2
maint: clean up code around calls to current_liboctave_error_handler.
Rik <rik@octave.org>
parents:
21134
diff
changeset
|
749 "column indices must appear in ascending order"); |
10312
cbc402e64d83
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10158
diff
changeset
|
750 } |
9829
8fd88cc36fa4
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Jaroslav Hajek <highegg@gmail.com>
parents:
9812
diff
changeset
|
751 else if (jtmp > jold) |
8fd88cc36fa4
fix loading sparse matrices
Jaroslav Hajek <highegg@gmail.com>
parents:
9812
diff
changeset
|
752 { |
8fd88cc36fa4
fix loading sparse matrices
Jaroslav Hajek <highegg@gmail.com>
parents:
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diff
changeset
|
753 for (octave_idx_type j = jold; j < jtmp; j++) |
15018
3d8ace26c5b4
maint: Use Octave coding conventions for cuddled parentheses in liboctave/.
Rik <rik@octave.org>
parents:
14846
diff
changeset
|
754 a.cidx (j+1) = ii; |
9829
8fd88cc36fa4
fix loading sparse matrices
Jaroslav Hajek <highegg@gmail.com>
parents:
9812
diff
changeset
|
755 } |
8fd88cc36fa4
fix loading sparse matrices
Jaroslav Hajek <highegg@gmail.com>
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diff
changeset
|
756 else if (itmp < iold) |
10312
cbc402e64d83
untabify liboctave header files
John W. Eaton <jwe@octave.org>
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10158
diff
changeset
|
757 { |
21136
7cac4e7458f2
maint: clean up code around calls to current_liboctave_error_handler.
Rik <rik@octave.org>
parents:
21134
diff
changeset
|
758 is.setstate (std::ios::failbit); |
7cac4e7458f2
maint: clean up code around calls to current_liboctave_error_handler.
Rik <rik@octave.org>
parents:
21134
diff
changeset
|
759 |
10312
cbc402e64d83
untabify liboctave header files
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parents:
10158
diff
changeset
|
760 (*current_liboctave_error_handler) |
21136
7cac4e7458f2
maint: clean up code around calls to current_liboctave_error_handler.
Rik <rik@octave.org>
parents:
21134
diff
changeset
|
761 ("invalid sparse matrix: " |
7cac4e7458f2
maint: clean up code around calls to current_liboctave_error_handler.
Rik <rik@octave.org>
parents:
21134
diff
changeset
|
762 "row indices must appear in ascending order in each column"); |
10312
cbc402e64d83
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changeset
|
763 } |
9829
8fd88cc36fa4
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Jaroslav Hajek <highegg@gmail.com>
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diff
changeset
|
764 |
10312
cbc402e64d83
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diff
changeset
|
765 iold = itmp; |
9829
8fd88cc36fa4
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Jaroslav Hajek <highegg@gmail.com>
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diff
changeset
|
766 jold = jtmp; |
8fd88cc36fa4
fix loading sparse matrices
Jaroslav Hajek <highegg@gmail.com>
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9812
diff
changeset
|
767 |
10312
cbc402e64d83
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diff
changeset
|
768 tmp = read_fcn (is); |
11586
12df7854fa7c
strip trailing whitespace from source files
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11523
diff
changeset
|
769 |
21136
7cac4e7458f2
maint: clean up code around calls to current_liboctave_error_handler.
Rik <rik@octave.org>
parents:
21134
diff
changeset
|
770 if (! is) |
7cac4e7458f2
maint: clean up code around calls to current_liboctave_error_handler.
Rik <rik@octave.org>
parents:
21134
diff
changeset
|
771 return is; // Problem, return is in error state |
7cac4e7458f2
maint: clean up code around calls to current_liboctave_error_handler.
Rik <rik@octave.org>
parents:
21134
diff
changeset
|
772 |
7cac4e7458f2
maint: clean up code around calls to current_liboctave_error_handler.
Rik <rik@octave.org>
parents:
21134
diff
changeset
|
773 a.data (ii) = tmp; |
7cac4e7458f2
maint: clean up code around calls to current_liboctave_error_handler.
Rik <rik@octave.org>
parents:
21134
diff
changeset
|
774 a.ridx (ii++) = itmp; |
10312
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diff
changeset
|
775 } |
9469
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776 |
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777 for (octave_idx_type j = jold; j < nc; j++) |
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778 a.cidx (j+1) = ii; |
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779 } |
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strip trailing whitespace from source files
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780 |
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781 return is; |
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782 } |
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783 |
5164 | 784 #endif |